Cutting force, tool life and surface integrity in milling of titanium alloy Ti-6Al-4V with coated carbide tools
Cutting force, tool life and surface integrity in milling of titanium alloy Ti-6Al-4V with coated carbide tools
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DOI：
10.1177/0954405414558732
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发表时间：
2016-04
期刊：
影响因子：
--
通讯作者：
W. Polini;S. Turchetta
中科院分区：
文献类型：
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作者：
W. Polini;S. Turchetta
钛合金广泛应用于航空航天领域，要求具有高强度、高耐腐蚀性和低质量的良好结合。机械性能导致了机械加工操作中的挑战，如加工温度高以及刀具磨损迅速增加。本工作采用三种硬质合金立铣刀加工钛合金Ti-6Al-4V。第一种是TiAl涂层，第二种和第三种是多层或单层TiAlN涂层。对干切削条件下的切削力和刀具寿命进行了实验研究，并分析了其与工艺参数的关系。通过测量已加工表面的粗糙度来评价已加工表面的质量。最后，分析和讨论了切削力变化、刀具磨损传播和表面粗糙度之间的关系。这三种刀具证明能够在它们遇到的高温下保持其硬度和其他机械性能。
Titanium alloys are widely used in aeronautics that demands a good combination of high strength, good corrosion resistance and low mass. The mechanical properties lead to challenges in machining operations, such as high process temperature as well as rapidly increasing tool wear. In this work, three carbide end mills have been used in machining of titanium alloy Ti-6Al-4V. The first tool is coated with TiAl; the second and the third are coated with multi-layers or with a single layer of TiAlN. The cutting force and the tool life have been experimentally investigated and put into relationship with the process parameters under dry cutting condition. The quality of the machined surfaces has been evaluated by measuring the roughness of the machined surfaces. Finally, the correlation among cutting force variation, tool wear propagation and surface roughness has been analyzed and discussed. These three tools demonstrate to be able to maintain their hardness and other mechanical properties at the high cutting temperatures that they encountered.